Designingand building at the edge of network and intelligence
I work where design, code, and infrastructure meet — turning ambiguous problems into products people can actually use.
I'm Fajar, a designer and developer based in Indonesia. My work sits at an unusual intersection: I design interfaces, write the front-end that ships them, and then build the network and IoT infrastructure they run on. That range means I can take an idea from a blank canvas through to a device on a wall that's reporting live data.
I started in networking — configuring routers, deploying fibre, standing up CCTV and Starlink links in places where connectivity is genuinely hard. That work taught me to care about reliability before elegance. Over time I moved toward building the software layer on top: dashboards, monitoring tools, and the interfaces that make infrastructure legible to the people operating it.
These days I spend most of my time in the modern web stack — TypeScript, React, Next.js — and increasingly with AI tooling as part of the build process rather than a novelty. I use it to move faster on the parts of a project that are mechanical, so more of my attention goes to the parts that need judgement.
From field network engineering to full-stack product work — a path built on shipping things that have to keep working after the install team leaves.
Currently — Open to full-time roles and freelance projectsFive disciplines, one toolkit
Design, code, AI, networking, and IoT. The range is deliberate — it means a project can go from interface to installed hardware without changing hands.
Development
Building for the web — from semantic markup to typed, component-driven applications.
- HTML95%
- CSS92%
- JavaScript90%
- TypeScript84%
- React86%
- Next.js82%
- Python75%
Design
Interface, brand, and media work. The layer where a product becomes legible.
- Figma88%
- Photoshop85%
- Canva92%
- Lightroom80%
- CapCut86%
AI
Using generative tooling as part of the craft, not as a novelty.
- Claude90%
- ChatGPT90%
- Midjourney82%
- Leonardo AI80%
- Veo74%
Networking
Designing and operating the infrastructure that keeps everything reachable.
- Mikrotik90%
- Router Configuration92%
- DHCP88%
- Linux82%
- Windows Deployment85%
- CCTV86%
- Starlink84%
IoT
Sensors, devices, and the physical deployment work that makes them real.
- Device Configuration86%
- Network Deployment88%
- Hardware Installation84%
A path through the stack
From field installation to full-stack product work — each role added a layer rather than replacing the last.
- 2024 — PresentCurrentIndonesia
IoT & Network Engineer
Project IoT BGN — PERURI
Deployed and configured IoT device networks for a national-scale monitoring programme, working alongside PERURI as the delivery partner.
- Configured and commissioned IoT device fleets across multiple sites, including sensor calibration and gateway provisioning.
- Built the network layer — addressing, DHCP scoping, and segmented access — so devices report reliably over constrained links.
- Documented deployment procedures that reduced on-site setup time for subsequent batches.
- IoT
- Mikrotik
- DHCP
- Linux
- Network Design
- 2022 — 2024Indonesia
Network & Infrastructure Technician
PT Fiber Star
Installed, configured, and maintained fibre and wireless connectivity for residential and business customers.
- Configured routers, switches, and access points — including Mikrotik routing, NAT, and firewall rules.
- Diagnosed connectivity faults end-to-end, from physical layer through to customer premises equipment.
- Deployed CCTV and Starlink installations in locations without reliable terrestrial coverage.
- Mikrotik
- Fibre
- Starlink
- CCTV
- Router Configuration
- 2021 — 2022Indonesia
IT Support & Deployment
PT Darun Raynor Istafajar
Handled Windows deployment, endpoint configuration, and day-to-day IT support across the organisation.
- Standardised Windows deployment images, cutting per-machine setup time significantly.
- Maintained local network services including file sharing, printing, and DHCP.
- Provided first-line support and hardware troubleshooting for staff endpoints.
- Windows Deployment
- DHCP
- Hardware
- IT Support
- 2020 — 2021Indonesia
Operations Staff
J&T Express
Logistics operations role — where the discipline around process, accuracy, and working under volume pressure started.
- Handled high-volume parcel processing with a focus on accuracy and turnaround time.
- Coordinated with couriers and sorting teams to resolve exceptions in the delivery pipeline.
- Operations
- Logistics
- Process
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